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4
votes
1answer
93 views

New alkaline batteries with 10-year shelf life—what's changed?

I'm finding that some new alkaline batteries, such as the new Duracell Duralock and Energizer Power Seal batteries, have a shelf life of 10 years. Most other alkaline batteries have a shelf life of 7 ...
-2
votes
0answers
63 views

Lithium Batteries: LiFePO4 vs LiPo vs LiCoO2 vs LiMnNiCo vs LiMnO2 [closed]

What are the differences between these battery chemistries? LiFePO4 (aka Lion?) vs LiPo vs LiCoO2 vs LiMnNiCo vs LiMnO2
2
votes
2answers
119 views

How fast may I trickle charge a full LSD NiMH battery?

I've bought two packages of low-self-discharge nickel-metal hydride AA batteries, each made by a different well-known battery manufacturer. Sadly, the datasheets aren't very detailed: • One ...
4
votes
1answer
148 views

Lithium-ion rechargeable battery, shelf life

For Lithium-ion rechargeable batteries, that have never been charged, or been charged like 2-3 times at most, some 2-3 years back, and having since-then been in packaged condition, what should I ...
3
votes
1answer
73 views

What makes primary batteries leak on very deep discharge?

From my experience, if a primary (alkaline or zink) battery is left in a device with very low consumption (like a remote control, or a quartz watch) then at some point all the energy is drained and ...
2
votes
1answer
122 views

Can a lead-acid battery charger be used for “Gel” type?

I have a PB-600-24 lead acid battery charger. Can I use it for the battery type that has an image as below? 4 of the batteries are in series.
6
votes
1answer
143 views

If I turn a AA around will it drain or damage electronics?

I have an Apple Bluetooth keyboard. The thing turns on all the time when I put it in my backpack. This is bad because it blocks the soft keyboard on my phone. It runs on 2 AA batteries. Lately, I ...
5
votes
3answers
248 views

Why does connecting batteries in series result in doubled current sourcing while shorting?

I have Duracell Ultra Power AAA batteries, current draw is around 2.5A when shorting for single unit. I have just tried connecting them in series and parallel then measure discharge current. ...
2
votes
2answers
151 views

Electrons' flow misconception?

Conductors have a single electron in the last band, these electrons get pushed forward by electrons coming from the source (Battery), each electron pushes its neighbor and so on. Current is the flow ...
11
votes
2answers
2k views

What's the highest theoretical energy density for a chemical battery?

This is more a physics/chemistry/nanotech question, but what's the theoretical best energy density you could get out of a chemical battery (or fuel cell), if you could arrange atoms in any manner you ...